The Sony WFXB700L Truly Wireless Headphones With Extra Bass combine truly wireless freedom with a bold, distinctive look. Ergonomic design ensures hour after hour of listening comfort. These wireless headphones allow you to Enjoy up to 18 hours of listening thanks to the handy charging case2. And if you're in a hurry, 10 minutes" quick charging gives you up to 60 minutes of music playback. Equipped with a Bluetooth chip that transmits sound to left and right ears simultaneously, coupled with optimised antenna design, ensures a stable connection and outstanding listening. Low audio latency makes for enjoyable video viewing too. The WF-XB700 earbuds are ergonomically designed to make contact with three different points on your ear for a secure, comfortable fit. With an IPX44 water resistance rating, splashes and sweat won't stop these headphonesso you can keep on moving to the music.